Clean-out device for furnaces



B. B. KAHN AND E. W. HAKE.

CLEAN OUT DEVICE FOR FURNACES.

APPLICATION FILED JUNE 3. Isle.

1,319,223. Patented' Oct. 21,1919;

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BERTRAND B. KAHN', or CINCINNATI, AND Enw ARD w. BAKE, or HAMILTON, oHro,

srovn COMPANY, or HAMILTON, OHIO.

nsslenons 'ro THE ESTATE cLnAn-oU'r nnvrcnron runirncns.

Specification of Letters Patent.

Patented Oct. 21, 1919.

Application filed June 3, 1919. Serial No. 301,554.

To all whom it may concern Be it known that we, BERTRAND B. KAHN and EDWARD W. HAKE, citizens of the United States, residing at Cincinnati, Hamilton county, Ohio, and HamiltomButler county, Ohio, respectively, have invented certain new and useful Improvements in Clean-Out Devices for Furnaces, of which the following is a specification.

This invention pertains to cleanout-devices for the flues of furnaces. We dispose a carrier entirely and permanently within the flue and on this carrier we secure a scraper which, by the manipulation of the carrier, may be caused to travel through the flue and move deposits to a suitable outlet. In the case of an annular flue our preference is that the carrier, carrying the scraper, take the form of a wire 1100p, to be directly manipulated through an opening in the flue and it is in this form that we illustrate the invention, which will be readily understood from the following description taken in connection with the accompanying drawing in which Figure 1 is a plan of the annular flue of a furnace provided with an exemplification of our cleanout-device, the flue appearing partly in horizontal section in the plane of line a of Figs. 2 and 3:

Fig. 2 is a side elevation of the same, partly in vertical section in the plane of line b of Figs. 1 and 3: and

Fig. 3 is a front elevation of the same, partly in vertical section in the plane of line 0 of Figs. 1 and 2.

In the drawing 1, indicates the annular flue of a furnace:

2, the smoke outlet therefrom:

3, a cleaning doorway which may, if desired, be provided in the periphery of the flue structure;

4, the dome, to set on the firepot, the interior of the dome having communication with the smoke outlet through'the medium of the flue:

5, a passageway between the dome and the flue, in which the smoke may divide as it passes to the flue on the way to the smoke outlet:

6, a rigid endless annular carrier formed of a wire hoop disposed within the flue:

7, a scraper disposed within the flue and mounted on the hoop 6:

8, the lapping ends of the wire of which the hoop is made, the lap occurring where the hoop is engaged by the scraper: and

9, a setscrew disposed in the scraper and serving to pinch the lapping ends of the wire of the hoop together and to secure the scraper to the hoop.

In furnaces of this general character there is quite apt to be more or less clogging of the flue by deposits of soot and ashes, and the common custom is to remove these deposits by means of a bent scraper introduced into the flue through its doorway or through the smoke outlet. In the present case the deposits are removed from the body of the flue by means of the scraper 7, and

this scraper, with its hoop, stays perma,

nently in the flue. The hoop and scraper may be manipulated through the doorway or through the smoke outlet, the scraper moving in a circular path through the flue and moving deposits to where they can be easily removed or be readily carried out of the smoke outlet by the draft. When the scraper is not in use it is to preferably occupy a neutral position where it will not clog any active part of the flue.

1. A cleanout device for furnace flues comprising, an annular flue having an opening through which the interior of the flue may be reached, an endless. hoop disposed within the flue, and a scraper secured to the hoop and resting on the floor of the flue and adapted to traverse said floor by the manipulation of the hoop through said opening, the hoop and scraper being retained permanently within the flue, combined substantially as set forth.

2. A cleanout device for furnace flues comprising, an annular flue having an to the contiguous ends of the Wire hoop,

opening through Which the interior of the combined substantially as set forth.

flue may be reached, a scraper resting on the floor of the flue and adapted to travel through the flue, an endless Wire hoop disposed permanently within the flue and hav- Witnesses:

ing its contiguous ends joining at the JUs'rUs VOLLBREOHT,

scraper, and means for fixing the scraper JOHN A. WOODOLY.

Copies of this'patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

